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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Promise.race</title>
</head>
<body>
    <script>
       /**
        * race 赛跑  了解
        * race 是 Promise 函数对象身上的一个方法, 用来批量处理异步任务的
        * 参数: promise 数组
        * 返回值: promise 实例对象
        *   状态:   由数组中最先改变状态的 promise 决定
        *   结果值: 由数组中最先改变状态的 promise 决定
        */
        let p1 = new Promise((resolve, reject) => {
            setTimeout(() => {
                // resolve('OK');
                reject('Fail');
            }, 100);
        });

        let p2 = Promise.resolve('Yes');

        let p3 = Promise.resolve('Yeah');

        let result = Promise.race([p1, p2, p3]);

        console.log(result);
    </script>
</body>
</html>